/* 超级黑板来源：扫码新增课表 + 章节选择 */
.popBlackboardScanShowHide .bbScanTip {
    margin: 22px 0 0;
    font-size: 13px;
    color: #999;
    text-align: center;
}

.popBlackboardScanShowHide .bbScanTip a {
    color: #277dff;
    text-decoration: none;
    cursor: pointer;
}

.popBlackboardScanShowHide .bbScanTip a:hover {
    text-decoration: underline;
}

.popBlackboardScanShowHide {
    z-index: 30;
}

.popBlackboardScanShowHide .blackboardScanModal {
    position: relative;
    width: 460px;
    padding: 24px 28px 32px;
    box-sizing: border-box;
    border-radius: 12px;
}

.popBlackboardScanShowHide .bbScanHead {
    padding-top: 18px;
    text-align: center;
}

.popBlackboardScanShowHide .bbScanHead p {
    margin: 0;
    font-size: 18px;
    color: #222;
}

.popBlackboardScanShowHide .bbScanClose {
    position: absolute;
    right: 12px;
    top: 12px;
    width: 22px;
    height: 22px;
    line-height: 20px;
    border-radius: 50%;
    color: #999;
    font-size: 20px;
    text-align: center;
    cursor: pointer;
}

.popBlackboardScanShowHide .bbScanClose:hover {
    color: #666;
}

.popBlackboardScanShowHide .bbScanQrBox {
    position: relative;
    width: 220px;
    height: 220px;
    margin: 26px auto 0;
    padding: 8px;
    box-sizing: border-box;
    border: 1px solid #eee;
    border-radius: 4px;
    background: #fff;
}

.popBlackboardScanShowHide .bbScanQrBox.expired #blackboardScheduleQrcode {
    opacity: 0.18;
    filter: grayscale(1);
}

.popBlackboardScanShowHide .bbScanExpiredMask {
    position: absolute;
    left: 0;
    top: 0;
    right: 0;
    bottom: 0;
    display: none;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.6);
    cursor: pointer;
    z-index: 2;
}

.popBlackboardScanShowHide .bbScanQrBox.expired .bbScanExpiredMask {
    display: flex;
}

.popBlackboardScanShowHide .bbScanExpiredMask:hover .bbScanExpiredIcon {
    stroke: #666;
}

.popBlackboardScanShowHide #blackboardScheduleQrcode img,
.popBlackboardScanShowHide #blackboardScheduleQrcode canvas {
    display: block;
    width: 100% !important;
    height: 100% !important;
}


.popKnowledgeSelectorShowHide {
    z-index: 9999 !important;
}

.popKnowledgeSelectorShowHide .knowledgeModal {
    width: 720px;
    height: 560px;
    padding: 20px 24px 24px;
    box-sizing: border-box;
    border-radius: 12px;
    display: flex;
    flex-direction: column;
}

.popKnowledgeSelectorShowHide .knowledgeHead {
    position: relative;
    height: 32px;
    line-height: 32px;
}

.popKnowledgeSelectorShowHide .knowledgeHead p {
    margin: 0;
    font-size: 20px;
    color: #222;
}

.popKnowledgeSelectorShowHide .knowledgeClose {
    position: absolute;
    right: 0;
    top: 5px;
    width: 22px;
    height: 22px;
    line-height: 20px;
    border-radius: 50%;
    color: #999;
    font-size: 20px;
    text-align: center;
    cursor: pointer;
}

.popKnowledgeSelectorShowHide .knowledgeClose:hover {
    color: #666;
}

.popKnowledgeSelectorShowHide .knowledgeToolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin: 8px 0 10px;
    color: #667;
    font-size: 13px;
}

.popKnowledgeSelectorShowHide .knowledgeToolbar .link {
    color: #277dff;
    cursor: pointer;
}

.popKnowledgeSelectorShowHide .knowledgeTreeBox {
    flex: 1;
    min-height: 0;
    overflow: auto;
    padding: 8px;
    border: 1px solid #e8ecf3;
    border-radius: 6px;
    background: #fafbfd;
}

.popKnowledgeSelectorShowHide .knowledgeBottom {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
    margin-top: 18px;
}

.popKnowledgeSelectorShowHide .knowledgeBtn {
    min-width: 82px;
    height: 36px;
    padding: 0 18px;
    border-radius: 18px;
    font-size: 14px;
    line-height: 34px;
    text-align: center;
    cursor: pointer;
    user-select: none;
    box-sizing: border-box;
}

.popKnowledgeSelectorShowHide .knowledgeBtn.cancel {
    border: 1px solid #c9d4e4;
    color: #556;
    background: #fff;
}

.popKnowledgeSelectorShowHide .knowledgeBtn.confirm {
    background: #277dff;
    border: 1px solid #277dff;
    color: #fff;
}

.popKnowledgeSelectorShowHide .knowledgeBtn.confirm.disabled {
    opacity: .5;
    cursor: not-allowed;
}

.knowledge-tree {
    font-size: 14px;
    color: #333;
}

.knowledge-tree ul {
    margin: 0;
    padding: 0;
    list-style: none;
}

.knowledge-tree .kt-root > .kt-node > .kt-row {
    background: #f0f3f8;
}

.knowledge-tree .kt-row {
    display: flex;
    align-items: center;
    height: 40px;
    padding: 0 10px;
    border-radius: 4px;
    margin-bottom: 5px;
    cursor: pointer;
}

.knowledge-tree .kt-row:hover {
    background: #e8f1ff;
}

.knowledge-tree .kt-row.kt-selected {
    background: #e8f1ff;
}

.knowledge-tree .kt-row.kt-selected .kt-label {
    color: #277dff;
    font-weight: 600;
}

.knowledge-tree .kt-row.kt-disabled,
.knowledge-tree .kt-row.kt-disabled:hover {
    background: #f6f7fb;
    cursor: not-allowed;
}

.knowledge-tree .kt-row.kt-disabled .kt-label {
    color: #99a3b2;
    font-weight: 400;
}

.knowledge-tree .kt-row.kt-disabled .kt-radio,
.knowledge-tree .kt-row.kt-disabled .kt-checkbox {
    pointer-events: none;
    opacity: .45;
}

.knowledge-tree .kt-toggle {
    flex: none;
    width: 16px;
    height: 16px;
    margin-right: 8px;
    position: relative;
    color: #8a94a6;
}

.knowledge-tree .kt-toggle.kt-expanded::before {
    content: '-';
    position: absolute;
    left: 0;
    top: -4px;
    font-size: 18px;
    line-height: 22px;
}

.knowledge-tree .kt-toggle.kt-collapsed::before {
    content: '+';
    position: absolute;
    left: 1px;
    top: -4px;
    font-size: 18px;
    line-height: 22px;
}

.knowledge-tree .kt-checkbox,
.knowledge-tree .kt-radio {
    flex: none;
    width: 15px;
    height: 15px;
    margin: 0 8px 0 0;
    accent-color: #277dff;
    cursor: pointer;
}

.knowledge-tree .kt-label {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.knowledge-tree .kt-children {
    padding-left: 32px;
}

.knowledge-tree .kt-hidden {
    display: none;
}

.knowledge-tree .kt-empty {
    padding: 48px 0;
    color: #778;
    text-align: center;
}

/* 已绑定章节：按钮右侧内联回显 */
.popCreateCourseShowHide .classLoc .knowledgeEntry,
.popCourseDetailShowHide .classLoc .knowledgeEntry {
    display: none;
    margin-left: 8px;
    color: #277dff;
    font-size: 14px;
    cursor: pointer;
}

.popCreateCourseShowHide .classLoc .knowledgeEntry:hover,
.popCourseDetailShowHide .classLoc .knowledgeEntry:hover {
    color: #1f6fe8;
}

.popCreateCourseShowHide .classLoc .knowledgeSummary,
.popCourseDetailShowHide .classLoc .knowledgeSummary {
    display: none;
    margin-left: 8px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    line-height: 20px;
    font-size: 13px;
    color: #456;
    max-width: 240px;
}

/* 详情页：回放关联章节独立行，位于“上课地点”下方 */
.popCourseDetailShowHide .classLoc .knowledgeRow {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 8px;
    line-height: 20px;
}

.popCourseDetailShowHide .classLoc .knowledgeRow .knowledgeEntry,
.popCourseDetailShowHide .classLoc .knowledgeRow .knowledgeSummary {
    margin-left: 0;
}

.popCourseDetailShowHide .classLoc .knowledgeRow .knowledgeSummary {
    flex: 1 1 auto;
    min-width: 0;
}

/* 兼容旧结构，不再展示章节标签 */
.popCourseDetailShowHide .classLoc .knowledgeSummaryLabel,
.popCourseDetailShowHide .classLoc .knowledgeTag {
    display: none !important;
}